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. 1914 Apr 15;8(2):54–56.

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Copyright, 1914, by Lightner Witmer, Editor.

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC5139596 PMID: 28909526

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